Magnetic discretion of naval propulsion machines

Froidurot, B.; Rouve, Laure-Line; Foggia, Albert; Bongiraud, Jean-Paul; Meunier, G.

doi:10.1109/20.996303

Cited by 13 publications

(7 citation statements)

References 2 publications

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“…It is based on a 3-D finite element modeling coupled with a post-processing based on a volume integral equation. This approach was successfully validated by experimental measurements [3].…”

Section: Forward Modelingmentioning

confidence: 85%

Noninvasive Fault Monitoring of Electrical Machines by Solving the Steady-State Magnetic Inverse Problem

et al. 2008

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This paper proposes an original approach for detection, localization, and quantification of faults appearing in electrical machines. The used method in this work deals with the analysis of the external magnetic field of a machine. This approach is already known, but until now, classical methods only detect if a fault is present or not. Thus, we propose a new approach based on the theory of inverse problems. From magnetic measurements realized on sensors located around the machine, a numerical model of the machine is inverted to get the distribution of the flux in the air gap. Therefore, the analysis of this distribution can allow us not only to identify a faulty mode, but also to quantify its importance.Index Terms-Electrical machines, flux leakage, integral method, inverse problem, method of moments, noninvasive diagnosis.

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“…It is based on a 3-D finite element modeling coupled with a post-processing based on a volume integral equation. This approach was successfully validated by experimental measurements [3].…”

Section: Forward Modelingmentioning

confidence: 85%

Noninvasive Fault Monitoring of Electrical Machines by Solving the Steady-State Magnetic Inverse Problem

et al. 2008

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“…The method has already shown good results in shielding effects computation or magnetic signature of ferromagnetic hulls. A combination of FEM and moment method can lead also to interesting results [13]. This method seems easier to implement than the use of infinite modeling tools in FEM or coupling with BEM.…”

Section: A Stray Field Computationmentioning

confidence: 99%

“…Let us remember that the magnetic field (and so the force) is calculated thanks to equivalent charge distribution. In fact, charges are a representation of the flux [see (13)]. A good way to apply moment method is to imagine where these charges are going to have the highest variation and then to refine the mesh in this area and not elsewhere.…”

Section: A Modeling Of An Actuatormentioning

confidence: 99%

A review of magnetostatic moment method

2006

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This paper proposes a review of the magnetostatic moments method (MoM) applied to model electromagnetic devices. This method is now well-known for its "light weight" and its simplicity of implementation. Its main advantages are the nonrequirement of an air region mesh and a coarse mesh of the ferromagnetic material. It leads to very fast resolution and very accurate field, force, and moment computations. The paper proposes a state of the art of this approach and shows some efficient realizations.Index Terms-Magnetization identification, magnetostatic moment method, point-matching approach, simplified moment method.

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“…An accurate formulation to compute the stray field has been proposed (Froidurot et al, 2002). It is based on a standard FEM computation with infinite box and then a post-processing with magnetic moments method.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the stray magnetic field created by faulty electrical machines

Bui

Chadebec

Rouve

et al. 2008

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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Purpose-This paper aims to compute the magnetic stray field created by faulty electrical machines. Design/methodology/approach-This paper proposes two approaches to compute the magnetic stray field created by faulty electrical machines. The first one presents a homogenized FEM method. The second one is based on a combination of an analytical expression for the magnetic field in the machine air gap with an integral method. Findings-The studies show good agreement and demonstrate the reliability of the approach. Originality/value-Two models developed in this paper originally used to compute the stray magnetic field of electrical machines. They can contribute to develop new tools for fault monitoring.

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Magnetic discretion of naval propulsion machines

Cited by 13 publications

References 2 publications

Noninvasive Fault Monitoring of Electrical Machines by Solving the Steady-State Magnetic Inverse Problem

Noninvasive Fault Monitoring of Electrical Machines by Solving the Steady-State Magnetic Inverse Problem

A review of magnetostatic moment method

Analysis of the stray magnetic field created by faulty electrical machines

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